[American Whirlpool Model 471 Covere Replacement Measurements]

I don't trust my measurement-taking skills, and want to ensure I don't waste $800 ordering the wrong size replacement cover.

Ideally, someone has this American Whirlpool Model 471 model and can assure me what size replacement lid to order.

1. Would A and  B sides need to be 1/4" longer ( 87 1/4")  for the lid to fit easily?

2. Would  C (corner radius) be 9"?

 

Your knowledge of this manner would be greatly appreciated!

 

 

 

A, B and C (corner radius)

[Re-use Water drained from Hottub?]

First time draining my tub.  Will the water released harm the grass?